Programming Articles - Page 3308 of 3366

Monitoring file access times is a common requirement for auditing, data management and cleanup of the scripts. Python provides multiple ways to retrieve the last access time of a file using the os and pathlib modules. Using os.path.getatime() Method In Python, we can use the os.path.getatime() method to retrieve a path's most recent access time. The path that we need to verify for the access time is taken as the input argument by os.path.getatime() method. This method returns the amount of time since the epoch, as a floating point value. It throws one OSError if the requested path cannot be ... Read More

Swap files and temporary files are common byproducts of text editors such as Vim, Emacs or even modern IDEs. These files—often with extensions like .swp, .swo, .tmp or .bak are used to store session data or backup content temporarily. These are useful during editing sessions in which they can clutter our project directories or interfere with version control systems if not cleaned up. In this article, we are going to explore how we can leverage Python to automatically find and delete these unwanted swap files from our workspace. Using os.walk() for Recursive Deletion In this approach we use Python's os.walk() ... Read More

You can create an objectUsing new keyword.Sample obj = new Sample();Using the newInstance() method and Class.forName() method.Sample obj2 = (Sample) Class.forName("Sample").newInstance();Using the clone() method by implementing Cloneable Interface (marker).Sample obj3 = (Sample) obj1.clone();Using class loader.Object obj4 = Sample.class.getClassLoader().loadClass("Sample");Using the constructor class from lang.reflect.Class cls = Sample.class; Constructor obj = cls.getDeclaredConstructors()[0]; Sample obj5 = (Sample) obj.newInstance();

Managing hidden files and folders in a directory is an essential part of building cleanup scripts or automation tools. On Windows, hidden files are not prefixed with a dot but instead they are marked using specific file attributes. In this article, we will explore how to remove those hidden files and directories programatically using Python. Filtering by Dot Prefix (Unix/Linux/macOS) On Unix-based systems, the files or folders starting with a dot "." are considered hidden. We can use this naming pattern to filter and remove hidden files. Here is an example of removing the hidden files and directories present in ... Read More

Listing files and directories using Python is a common task in many applications, from file management tools to automated scripts. However, when we are working on the Windows Operating System, the hidden files and folders are marked using specific file attributes, which can clutter the output if not handled properly. Unlike Unix-based systems, where hidden files typically start with a dot such as .hidden) whereas Windows uses metadata to mark files as hidden. In this article, we'll explore several methods to list only non-hidden files and directories. Basic Filtering by Name Prefix This is the basic Filtering method, which checks ... Read More

A computer's file system's directory is an organisational feature used to store and locate files. A tree of directories is created by organising directories hierarchically. There are parent-child relationships in directories. A folder can also be used to refer to a directory. Python has accumulated a number of APIs that can list the directory contents over time. Useful functions include Path.iterdir, os.scandir, os.walk, Path.rglob, and os.listdir. We could need a list of files or folders in a given directory in Python. You can accomplish this in a number of ways. OS module A function that returns a list of the ... Read More

An object is created from a class using the new keyword. There are three steps when creating an object from a class −Declaration − A variable declaration with a variable name with an object type.Instantiation − The 'new' keyword is used to create the object.Initialization − The 'new' keyword is followed by a call to a constructor. This call initializes the new object.Examplepublic class Sample {    public static void main(String args[]){       Sample s = new Sample();    } }

Packages are similar to namespaces in C#.

When we are working with directories in Python, a clutter of hidden files can be created. Hidden files are created with a dot (.) on Unix-like operating systems and we can filter them easily. In this article, we will explore different methods to ignore hidden files using the os module and pathlib. Using List Comprehension with os.listdir() In Python, when we use the os.listdir() method the hidden files i.e., the files those are starting with a dot . are also included in the result. To ignore those hidden files and list only visible files we need to pass a condition ... Read More

Pseudo-terminals (pty) are an advanced and powerful technique in Python when we are dealing with terminal-based processes or simulating interactive sessions programmatically. A pseudo-terminal allows a process to connect to a real terminal. Python provides a built-in pty module that helps in creating and managing these terminal pairs. In this article, we will learn how to open a new pseudo-terminal pair using Python. Using pty.openpty() The pty module in Python provides the openpty() function that returns a tuple containing file descriptors for the master and slave ends of a new pseudo-terminal pair. Example Following is an example, which shows ... Read More